330 Java Tips.pdf - FTP Server

String, text, numbers, I/O II part
stores the data)?
Answer: The correct way to do this is something like this:
Calendar cal = Calendar.getInstance();
cal.set(1998, Calendar.NOVEMBER, 15);
Date date = cal.getTime();
Q: Let's say I have a text string with the text: Hello! Then how do I add quotes to
it so it will be: "Hello!"
Answer:
answer is String s = "Hello!"
"\"" + s + "\""
and if the result is to become the new value of s,
s = "\"" + s + "\""
Q: I want to send Image through network. I made OutputStream to send Image...
OutputStream out = socket.getOutputStream();
but I can't send Image directly.
How can I send Image?
Answer: Unfortunately, the java.awt.Image class is abstract and is not serializable,
otherwise this would be easy.
From the Java docs: "The abstract class Image is the superclass of all classes that
represent graphical images. The image must be obtained in a platform-specific
manner."
Consider using the Image.getSource method, getting the producer, getting the bytes,
then send [width][height][bytes...].
--
Mark Watson, Java consulting, Open Source and Content: www.markwatson.com
Commercial software products: www.knowledgebooks.com
Q: I want to get the code behind an HTML page.
Answer:
URL url = new URL("http://www.sun.com");
BufferedReader reader;
reader = new BufferedReader(new InputStreamReader(url.openStream()));
String str;
while ((str = reader.readLine())!=null){
// process str
}
Q: I am wondering if JDK supports to open a file in the exclusive mode?
Answer: No, file locking is not supported in current VMs. You can implement
lockfiles, however, using the File.createNewFile() method. Since JDK 1.3:
"Atomically creates a new, empty file named by this abstract pathname if and only if
a file with this name does not yet exist. The check for the ' existence of the file and
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